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Sources
Find a Grave, database and images (https://www.findagrave.com/memorial/93694832/john-riggs: accessed 15 September 2022), memorial page for John Riggs (1861–1938), Find a Grave Memorial ID 93694832, citing Henry Cemetery, Henry, Marshall County, Illinois, USA; Maintained by GWL (contributor 47839266) .
WikiTree profile Riggs-276 created through the import of The Brown_s of Council Bluffs (1).ged on Sep 25, 2011 by William Brown. See the Changes page for the details of edits by William and others.
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DNA Connections
It may be possible to confirm family relationships with John by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with John: